CD43 - scan the forums, craigslist, eBay. Dont buy ones with an ///m sticker on it as they aren't BMW units. Pretty sure you can still buy knobs and the little flip covers if missing/damaged as those are often in poor condition.

I like to drive my car and not be reminded that Cel phones looked like this when it was released.
The functionality of having good voice recognition and GPS is worth the relative eye sore to me. You may like the charm of period correct looking electronics though.

Most modern HUs have piano black (high gloss) everywhere in their molds (that stick out like a sore thumb in the E36 interiors). It goes a long way to remove these pieces and bead blast, or "brush" them to a matte finish with scotchbrite where you can. You need low, low pressure for bead blasting plastic (start at 10-15psi) and work your way up to 20 if needed.

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